Article
Environmental Sciences
Fotini Noli, Aimilia Avgerinou, Eleftheria Kapashi, Maria Kapnisti
Summary: Pomegranate peel, treated with acidic and alkaline solutions, showed effective removal of uranium and thorium from aqueous solutions. The sorption efficiency for both metals was enhanced, indicating a complex sorption mechanism involving physical adsorption and surface precipitation as explained by various analytical techniques such as FTIR, XRD, and SEM.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Chemistry, Analytical
Mirza Nuhanovic, Narcisa Smjecanin, Neira Mulahusic, Jasmina Sulejmanovic
Summary: Modified pomegranate peel was effectively used as a sorbent for biosorption of uranium(VI) from aqueous solution, achieving a maximum adsorption capacity of 93.40 mg L-1 under optimized conditions. The kinetics study showed best agreement with the pseudo-second order model, while the thermodynamic study indicated the adsorption process is endothermic and nonspontaneous.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2021)
Article
Chemistry, Analytical
Narcisa Smjecanin, Mirza Nuhanovic, Jasmina Sulejmanovic, Zeljko Grahek, Amra Odobasic
Summary: Red beet peel was used as a biosorbent for U(VI) removal, and showed promising results. The prepared biosorbent was characterized and the optimal pH and biosorption capacity were determined. The biosorbent exhibited selectivity for U(VI) ions, and the experimental results fit well with Langmuir's and Freundlich's models, as well as pseudo-second order model.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2022)
Article
Chemistry, Analytical
Anna-Magdalini Psyrillou, Fotini Noli
Summary: The study found that tomato peel has the potential to remove uranium through adsorption, with improved efficiency after acidic or alkaline treatment. The experiments were conducted under various conditions and the adsorption capacity was evaluated by fitting the data to Langmuir and Freundlich models. The results indicated ion exchange and interactions between uranium and surface functional groups.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2021)
Article
Environmental Sciences
Yanxia Cheng, Feize Li, Ning Liu, Tu Lan, Yuanyou Yang, Ting Zhang, Jiali Liao, Renwei Qing
Summary: Ankistrodesmus sp., a green alga, shows high efficiency in removing uranium from water, making it a promising candidate for practical applications in the field of uranium contamination disposal.
Review
Environmental Sciences
S. Akash, Baskaran Sivaprakash, V. C. Vadivel Raja, Natarajan Rajamohan, Govarthanan Muthusamy
Summary: Uranium, a radioactive and chemically toxic element, poses a major threat to the ecosystem. However, bioremediation methods that utilize microbes and plants to transform uranium into a less toxic form have proven to be effective in eliminating its hazards.
ENVIRONMENTAL POLLUTION
(2022)
Article
Biotechnology & Applied Microbiology
Yangzhen Shu, Shanshan Li, Jingxi Xie, Kexin Guo, Conghui Cheng, Luoyao Chen, Guowen Peng, Fangzhu Xiao
Summary: The research reveals the potential of genetically recombinant E. coli DH5 alpha containing DSR A gene in uranium enrichment, but there is an upper limit to the tolerance of high concentrations of UO22+. Strains D1 mainly resist toxins by releasing inorganic phosphates to precipitate UO22+ and transferring it to the cytoplasm where it is metabolized into U(IV) to reduce toxicity.
ENZYME AND MICROBIAL TECHNOLOGY
(2021)
Article
Engineering, Environmental
Yuchuan Yang, Hao Yang, Yi Wan, Wenhu Zhou, Sha Deng, Yao He, Guiping He, Xiang Xie, Ruijie Deng
Summary: The study introduced a novel approach for detecting uranium pollution in environment and food through a temperature-robust, label-free quantification using G-quadruplex proximate DNAzyme. The method ensures reliable detection of uranium within a temperature range of 18 to 41 degrees Celsius, showing practicality and high responsiveness for monitoring purposes.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Qiuhan Yu, Yihui Yuan, Lijuan Feng, Wenyan Sun, Ke Lin, Jiacheng Zhang, Yibin Zhang, Hui Wang, Ning Wang, Qin Peng
Summary: A marine Pseudomonas stutzeri strain MRU-UE1 was isolated for the first time with high uranium immobilization capacity. Through the synergetic mechanisms of biosorption, biomineralization, and bioreduction, this strain immobilized uranium in new forms under aerobic environment, showing potential applications in environmental uranium contamination remediation and uranium extraction from seawater.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Mohamed A. Embaby, El-sayed A. Haggag, Ahemd S. El-Sheikh, Diaa A. Marrez
Summary: The biosorption of uranium by non-living biomass of Chlorella sorokiniana was studied. The optimal pH for uranium biosorption was 2.5 and the equilibrium time was 90 min. The kinetics followed a pseudo-second-order rate equation and the biosorption process fit the Langmuir isotherm model well. The morphology of the algal biomass and functional groups on the algal surface were investigated. Thermodynamic simulations indicated that the uranium biosorption process was exothermic and spontaneous at lower temperatures.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Mostafa M. S. Ismaiel, Yassin M. El-Ayouty, Saad A. Abdelaal, Hoda A. Fathey
Summary: Activities related to uranium mining and nuclear industry may have negative environmental impacts. This study compared the uranium biosorption efficiency of two immobilized algae and investigated the effects of various factors. The results suggest that immobilized algae can be used for recovery and biosorption of uranium from aqueous solutions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Analytical
Nana Liu, Ziyi Fang, Yunan Xu, Miao Xue, Liyuan Zhan, Binliang Wang, Yijun Yuan
Summary: In response to the depletion of global uranium reserves and the radioactive contamination of wastewater, efficient and sustainable uranium biosorbents are urgently needed. In this study, a green macroalga Rhizoclonium riparium was prepared and used for uranium removal. The results showed high adsorption capacity, selective adsorption, and good recycling performance of R. riparium, indicating its potential as a biosorbent for removing radioactive contamination.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Yanqing Zang, Chao Du, Xin Ru, Yang Cao, Feng Zuo
Summary: This study aimed to investigate the mechanisms of nature and modified 'Guanximiyou' pummelo peel pectin (GGP and MGGP) in alleviating T2DM through in vitro and in vivo. After modification, pectin was transformed from high methoxy pectin (HMP) to low methoxy pectin (LMP), and the content of galacturonic acid was increased. These made MGGP have stronger antioxidant capacity and better inhibition effect on corn starch digestion in vitro. In vivo experiments have shown that both GGP and MGGP inhibited the development of diabetes after 4 weeks of ingestion. However, MGGP can more effectively reduce blood glucose and regulate lipid metabolism, and has significant antioxidant capacity and the ability to promote SCFAs secretion. In addition, 16S rRNA analysis showed that MGGP changed the composition of intestinal microbiota in diabetic mice, decreased the abundance of Proteobacteria, and increased the relative abundance of Akkermansia, Lactobacillus, Oscillospirales and Ruminococcaceae. The phenotypes of the gut microbiome also changed accordingly, indicating that MGGP can inhibit the growth of pathogenic bacteria, alleviate intestinal functional metabolic disorders and reverse the potential risk of related complications. Altogether, our findings demonstrate that MGGP, as a dietary polysaccharide, may inhibit the development of diabetes by reversing the imbalance of gut microbiota.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biotechnology & Applied Microbiology
Uday Kumar Banala, Nilamadhab Prasad Indradyumna Das, Subba Rao Toleti
Summary: This review discusses the critical role of different biological groups in uranium bioremediation, emphasizing the interactions between metal and microorganisms. Various strategies using different microbial agents to adsorb, accumulate, reduce, or mineralize uranium are explored to limit contamination in the environment. The importance of biological agents and factors associated with the bioremediation of uranium polluted sites is highlighted.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Physical
Fotini Noli, Eleftheria Kapashi, Ioannis Pashalidis, Antigoni Margellou, Dimitrios Karfaridis
Summary: In this study, biosorbents from winery wastes were modified chemically and thermally to enhance their sorption capacity for U(VI) removal. Various parameters were examined in batch experiments in aqueous solutions, and characterization techniques were used to explore the mechanism of U(VI) adsorption.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
